1Libnodeupdown(3) User Contributed Perl Documentation Libnodeupdown(3)
2
6 Libnodeupdown - Perl extension for libnodeupdown
7
9 use Libnodeupdown;
10 Libnodeupdown::NODEUPDOWN_ERR_SUCCESS
12 Libnodeupdown::NODEUPDOWN_ERR_NULLHANDLE
13 Libnodeupdown::NODEUPDOWN_ERR_CONNECT
14 Libnodeupdown::NODEUPDOWN_ERR_CONNECT_TIMEOUT
15 Libnodeupdown::NODEUPDOWN_ERR_HOSTNAME
16 Libnodeupdown::NODEUPDOWN_ERR_ISLOADED
17 Libnodeupdown::NODEUPDOWN_ERR_NOTLOADED
18 Libnodeupdown::NODEUPDOWN_ERR_OVERFLOW
19 Libnodeupdown::NODEUPDOWN_ERR_PARAMETERS
20 Libnodeupdown::NODEUPDOWN_ERR_NULLPTR
21 Libnodeupdown::NODEUPDOWN_ERR_OUTMEM
22 Libnodeupdown::NODEUPDOWN_ERR_NOTFOUND
23 Libnodeupdown::NODEUPDOWN_ERR_BACKEND_MODULE
24 Libnodeupdown::NODEUPDOWN_ERR_CLUSTERLIST_MODULE
25 Libnodeupdown::NODEUPDOWN_ERR_CONFIG_MODULE
26 Libnodeupdown::NODEUPDOWN_ERR_CONF_PARSE
27 Libnodeupdown::NODEUPDOWN_ERR_CONF_INPUT
28 Libnodeupdown::NODEUPDOWN_ERR_CONF_INTERNAL
29 Libnodeupdown::NODEUPDOWN_ERR_MAGIC
30 Libnodeupdown::NODEUPDOWN_ERR_INTERNAL
31 Libnodeupdown::NODEUPDOWN_ERR_ERRNUMRANGE
32 $handle = Libnodeupdown->nodeupdown_handle_create();
34 $handle->nodeupdown_load_data();
36 $handle->nodeupdown_load_data($hostname,
37 $port,
38 $timeout_len,
39 $reserved);
40 $handle->nodeupdown_errnum()
42 $handle->nodeupdown_strerror($errnum)
43 $handle->nodeupdown_errormsg()
44 $handle->nodeupdown_perror($msg)
45 $handle->nodeupdown_get_up_nodes_string();
47 $handle->nodeupdown_get_down_nodes_string();
48 $handle->nodeupdown_get_up_nodes_list();
50 $handle->nodeupdown_get_down_nodes_list();
51 $handle->nodeupdown_is_node_up($node);
53 $handle->nodeupdown_is_node_down($node);
54 $handle->nodeupdown_up_count();
56 $handle->nodeupdown_down_count();
57
59 This package provides an OO perl interface to the nodeupdown C API (see
60 libnodeupdown(3)). The perl interface is simliar to the nodeupdown C
61 API, with some necessary changes due to the inherent differences
62 between C and perl. Please read the instructions below so to
63 understand how to use the Libnodeupdown package.
64 Initialization
66 Libnodeupdown->nodeupdown_handle_create
67 Returns a nodeupdown object on success, undef on error.
68 $handle->nodeupdown_load_data()
70 $handle->nodeupdown_load_data($hostname, $port, $timeout_len,
71 $reserved)
72 Loads data for the remainder of the nodeupdown library to use. To
73 use default values, pass in undef for any of the specified
74 parameters. To use all defaults, simply call nodeupdown_load_data
75 without any parameters. Returns 0 on success, -1 on error.
76 Error Messages
78 Similarly to the C API, an error code is stored in the nodeupdown
79 object after an error has occurred. The following can be used to
80 retrieve the error code and output information about the error.
81 $handle->nodeupdown_errnum()
83 Returns the error code most recently set.
84 $handle->nodeupdown_strerror($errnum)
86 Returns a string describing the error code $errnum.
87 $handle->nodeupdown_errormsg()
89 Returns a string describing the most recent error.
90 $handle->nodeupdown_perror([$msg])
92 Outputs $msg and a string describing the most recent error to
93 standard error. If $msg is not specified, only a description of
94 the most recent error will be output to standard error.
95 Data Functions
97 $handle->nodeupdown_get_up_nodes_string()
98 Returns a ranged string of nodes that are up. Returns undef on
99 error.
100 $handle->nodeupdown_get_down_nodes_string()
102 Returns a ranged string of nodes that are down. Returns undef on
103 error.
104 $handle->nodeupdown_get_up_nodes_list()
106 Returns a list of nodes that are up. Returns undef on error.
107 $handle->nodeupdown_get_down_nodes_list()
109 Returns a list of nodes that are up. Returns undef on error.
110 $handle->nodeupdown_is_node_up($node)
112 Returns 1 if the specified node is up, 0 if not, -1 on error.
113 $handle->nodeupdown_is_node_down($node)
115 Returns 1 if the specified node is down, 0 if not, -1 on error.
116 $handle->nodeupdown_up_count()
118 Returns the number of up nodes, -1 on error.
119 $handle->nodeupdown_down_count()
121 Returns the number of down nodes, -1 on error.
122 Error Codes/Constants
124 The same error codes and constants listed in /usr/include/nodeupdown.h
125 can be accessed through the following functions:
126 Libnodeupdown::NODEUPDOWN_ERR_SUCCESS
128 Libnodeupdown::NODEUPDOWN_ERR_NULLHANDLE
129 Libnodeupdown::NODEUPDOWN_ERR_CONNECT
130 Libnodeupdown::NODEUPDOWN_ERR_CONNECT_TIMEOUT
131 Libnodeupdown::NODEUPDOWN_ERR_HOSTNAME
132 Libnodeupdown::NODEUPDOWN_ERR_ISLOADED
133 Libnodeupdown::NODEUPDOWN_ERR_NOTLOADED
134 Libnodeupdown::NODEUPDOWN_ERR_OVERFLOW
135 Libnodeupdown::NODEUPDOWN_ERR_PARAMETERS
136 Libnodeupdown::NODEUPDOWN_ERR_NULLPTR
137 Libnodeupdown::NODEUPDOWN_ERR_OUTMEM
138 Libnodeupdown::NODEUPDOWN_ERR_NOTFOUND
139 Libnodeupdown::NODEUPDOWN_ERR_BACKEND_MODULE
140 Libnodeupdown::NODEUPDOWN_ERR_CLUSTERLIST_MODULE
141 Libnodeupdown::NODEUPDOWN_ERR_CONFIG_MODULE
142 Libnodeupdown::NODEUPDOWN_ERR_CONF_PARSE
143 Libnodeupdown::NODEUPDOWN_ERR_CONF_INPUT
144 Libnodeupdown::NODEUPDOWN_ERR_CONF_INTERNAL
145 Libnodeupdown::NODEUPDOWN_ERR_MAGIC
146 Libnodeupdown::NODEUPDOWN_ERR_INTERNAL
147 Libnodeupdown::NODEUPDOWN_ERR_ERRNUMRANGE
148
150 Albert Chu <chu11@llnl.gov>
151
153 libnodeupdown
154perl v5.30.0 2019-07-27 Libnodeupdown(3)